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BR9805178A - Mechanism of actuation of valve member in injection molding. - Google Patents

Mechanism of actuation of valve member in injection molding.

Info

Publication number
BR9805178A
BR9805178A BR9805178-4A BR9805178A BR9805178A BR 9805178 A BR9805178 A BR 9805178A BR 9805178 A BR9805178 A BR 9805178A BR 9805178 A BR9805178 A BR 9805178A
Authority
BR
Brazil
Prior art keywords
valve
actuation
pin plate
cam
bars
Prior art date
Application number
BR9805178-4A
Other languages
Portuguese (pt)
Inventor
Jobst Ulrich Gellert
Helen Zhuang
Original Assignee
Mold Masters Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mold Masters Ltd filed Critical Mold Masters Ltd
Publication of BR9805178A publication Critical patent/BR9805178A/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/27—Sprue channels ; Runner channels or runner nozzles
    • B29C45/28—Closure devices therefor
    • B29C45/2806—Closure devices therefor consisting of needle valve systems
    • B29C45/281—Drive means therefor
    • B29C2045/2831—Needle valves driven by a cam

Landscapes

  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

"MECANISMO DE ACIONAMENTO DE MEMBRO DE VáLVULA EM MOLDAGEM POR INJEçãO", compreendendo uma máquina para moldar a injeção multi-cavidades com entrada de válvula. Um número de pinos de válvula estendem-se anteriormente, a partir de uma chapa de pino de válvula, cada um em alinhamento com uma entrada que conduz a uma cavidade no molde. Um par de barras de came estendem-se ao lado de um par de barras de acionamento vinculadas à chapa de pino de válvula. Blocos deslizantes retangulares anexos a cada barra de acionamento encaixam-se em ranhuras diagonais na barra de came adjacente, onde o movimento longitudinal das barras de came movimentam a chapa de pino de válvula e os pinos de válvula para a frente e para atrás. As barras de came são conduzidas longitudinalmente por mecanismo de acionamento eletro-mecânico para simultaneamente e precisamente paralisar os pinos de válvula em, pelo menos, três diferentes e precisas posições durante cada ciclo de injeção."MECHANISM FOR DRIVING VALVE MEMBER IN INJECTION MOLDING", comprising a machine for molding multi-cavity injection with valve inlet. A number of valve pins extend previously, from a valve pin plate, each in alignment with an inlet leading to a cavity in the mold. A pair of cam bars extend alongside a pair of actuation bars attached to the valve pin plate. Rectangular sliding blocks attached to each actuation bar fit into diagonal grooves in the adjacent cam bar, where the longitudinal movement of the cam bars move the valve pin plate and the valve pins forward and backward. The cam bars are driven longitudinally by an electro-mechanical actuation mechanism to simultaneously and precisely paralyze the valve pins in at least three different and precise positions during each injection cycle.

BR9805178-4A 1997-11-27 1998-11-11 Mechanism of actuation of valve member in injection molding. BR9805178A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA2222381 1997-11-27

Publications (1)

Publication Number Publication Date
BR9805178A true BR9805178A (en) 2000-04-25

Family

ID=4161806

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9805178-4A BR9805178A (en) 1997-11-27 1998-11-11 Mechanism of actuation of valve member in injection molding.

Country Status (1)

Country Link
BR (1) BR9805178A (en)

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Legal Events

Date Code Title Description
FA Application withdrawn